Posts Tagged ‘ Statistics ’

R Passes SPSS in Scholarly Use, Stata Growing Rapidly

August 20, 2014
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by Robert A. Muenchen Here is my latest update to The Popularity of Data Analysis Software. To save you the trouble of reading all 25 pages of that article, the new section is below. The two most interesting nuggets it contains are: … Continue reading
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R Continues Its Rapid Growth

April 7, 2014
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This post was kindly contributed by r4stats.com » SAS - go there to comment and to read the full post. I’ve just updated the section below from The Popularity of Data Analysis Software. Note that the overall article is still under construction and all the figure numbers have changed from previous versions. n Growth...
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SAS, SPSS, Stata Users: Learn R from Home April 21

March 11, 2014
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Has learning R been driving you a bit crazy? If so, it may be that you’re “lost in translation.” On April 21 and 23, I’ll be teaching a webinar, R for SAS, SPSS and Stata Users. With each R concept, … Continue reading
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Analytics Software Popularity Update: Counting Blogs, Simplifying Job Searches

March 7, 2014
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My latest update to The Popularity of Data Analysis Software is an attempt to use blog counts to estimate the popularity of analytics software. While I was able to greatly broaden the coverage of packages when studying job data, I … Continue reading
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Type I error rates in test of normality by simulation

February 26, 2014
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Type I error rates in test of normality by simulation

This simulation tests the type I error rates of the Shapiro-Wilk test of normality in R and SAS.

First, we run a simulation in R. Notice the simulation is vectorized: there are no "for" loops that clutter the code and slow the simulation.


# type I error
alpha <- 0.05

#...
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Job Trends in the Analytics Market: New, Improved, now Fortified with C, Java, MATLAB, Python, Julia and Many More!

February 25, 2014
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I’m expanding the coverage of my article, The Popularity of Data Analysis Software. This is the first installment, which includes a new opening and a greatly expanded analysis of the analytics job market. Here it is, from the abstract onward … Continue reading
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Learn R and/or Data Management from Home January or April

December 11, 2013
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If you want to learn R, or improve your current R skills, join me for two workshops that I’m offering through Revolution Analytics in January and April. If you already know another analytics package, the workshop, Intro to R for … Continue reading
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Some popular regression procedures in SAS/STAT

October 23, 2013
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Some popular regression procedures in SAS/STAT

With the new release of PROC ADAPTIVEREG in SAS 9.4, the tool belt of regressions in SAS/STAT is almost completed. Hope in the future there will be a designated procedure for k-NN in SAS/STAT.. 
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